High-Current Short Duration&colon; 2 current surges of 65kA magnitude and 4&sol;10μs wave shape&period;Low-Current Long Duration &colon; 20 current surges of 75 A magnitude and 2000μs duration &period;1 MCOV&equals;Maximum Continuous Operating Voltage that may be applied continuously between the terminals of the arrester&period;2 The equivalent Front-of -Wave is the maximum discharge voltage for a 5kA impulse current wave which produces a voltage wave cresting in 0&period;35μs&period; 3 Based on a switching surge current impulse of 45×90μs&comma; 500 amperes&period;4 The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in 0&period;5μs&period;ZINC OXIDE PROTECTIVE CHARACTERISTICS &lpar;10kA NORMAL DUTY POLYMER&rpar;

High-Current Short Duration&colon; 2 current surges of 65kA magnitude and 4&sol;10μs wave shape&period;Low-Current Long Duration &colon; 20 current surges of 75 A magnitude and 2000μs duration &period;1 MCOV&equals;Maximum Continuous Operating Voltage that may be applied continuously between the terminals of the arrester&period;2 The equivalent Front-of -Wave is the maximum discharge voltage for a 5kA impulse current wave which produces a voltage wave cresting in 0&period;5μs&period; 3 Based on a switching surge current impulse of 45×90μs&comma; 500 amperes&period;4 The equivalent Front-of-Wave is the maximum discharge voltage for a 10kA impulse current wave which produces a voltage wave cresting in 0&period;5μs&period;

3&period;APPLICATION CONDITION3&period;1 Normal Service condition Surge arresters which conform to this standard shall be suitable for normal operation under the following normal service conditions&colon;Ambient air temperature within the range of -40ºC to &plus;40ºC&period;Solar radiation &colon;The effects of maximum solar radiation &lpar;1&period;1kW&sol;m2&rpar;have been taken into account by preheating the test specimen in the type tests&period; If there are other heat sources near the arrester&comma; the application of the arrester shall be subject to an agreement between the manufacturer and the purchaser&period;Altitude is not exceeding 1000m&period;Frequency of the A&period;C power supply is not less than 48Hz but not more than 62HZ&period;Power frequency voltage applied continuously between the terminals of the arrester is not exceeding its continuous operating voltage&period;Mechanical conditions &semi;no strong vibration&period;Pollution conditions&colon; no requirement at this time&period;

3&period;2 Abnormal Service ConditionsSurge arresters subject to other than normal application or service conditions may require special consideration in design&comma; manufacture or application&period; The use of this standard in case of abnormal service conditions is subject to agreement between the manufacturer and the purchaser&period;

4 OVERALLDIMENSIONS

5kA NORMAL DUTY POLYMER

RatedVoltage

3

6

9

10

12

15

18

21

24

27

30

33

36

A

98mm

B

68mm

C

200

246

246

246

246

302

350

350

350

420

420

480

480

D

138mm

CreepageDistance

180

390

390

390

365

500

660

660

700

890

890

970

1100

10kA NORMAL DUTY POLYMER

RatedVoltage

3

6

9

10

12

15

18

21

24

27

30

33

36

A

106mm

B

78mm

C

200

246

246

246

246

302

350

350

350

420

420

480

480

D

138mm

CreepageDistance

180

390

390

390

365

500

660

660

700

890

890

970

1100

5&period; INSTALLATION AND PRECAUTION5&period;1 The surge arrester is fixed to the supporting structure by fitting-bracket&comma; and connecting its top terminal to H V wire of electrical apparatus &comma;which is protected &comma;with 8-16 mm2 copper wire&comma; connecting its chassis cover to the terminal of operation counter&comma; connecting the other terminal of operation counter to the ground wire&comma; or connecting its chassis cover to the ground directly&period; 5&period;2 The surge arrester should be lain close to the electrical apparatus&comma; which is protected &comma;for protective effects&period; When the transformer is protected &comma;the distance between the arrester and on the low voltage side of a distribution transformer in case any damage to the insulation caused by forward-backward over voltage 5&period;3 After bring the surge arrester into operating &comma;should be do preventive test every two years&comma; measuring the leakage current of arrester at DA 1mA&period;5&period;4 Please don't break open the surge arresters&period;5&period;5 This product is warranted against defects in workmanship and materials &period;If any failure &comma;resulting from a defect in either workmanship or material&comma; is occurred under the normal using within one years form the date of purchase &comma;we shall replace it in free of charge&period;